An automatic workpiece positioning device

Abstract

The utility model discloses a workpiece automatic positioning device, including base, the base is rotated and is installed with two -way screw through the installation groove in, the base outer wall fixed mounting has with two -way screw connection motor, two -way screw outer wall is fixedly installed with two moving blocks through the limiting mechanism screw, two the moving block upper end surface all are fixedly installed with the installation frame through the connecting mechanism, every installation frame inside all are slidably installed with the mounting block, and the outer wall of two mounting blocks of same group is fixedly installed with the clamping block, and every installation frame upper end surface all are slidably installed with the fixed pin, the utility model discloses the installation block and installation frame sliding fit are set up, and the detachable structure of fixed pin and the insertion hole is combined, can replace the clamping block of adaptation according to workpiece size, shape, and when changing type, only need to pull the knob and take out the fixed pin, and the knob is loosened after adjusting or replacing the mounting block, and the time -consuming is short, and the adaptation ability of equipment to multiple varieties workpieces is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of workpiece positioning technology, and in particular to an automatic workpiece positioning device. Background Technology

[0002] A workpiece is an object that is processed, handled, or assembled during the production process of machining, assembly, etc. It is also often referred to as a blank or part.

[0003] In the machinery manufacturing and related industries, precise workpiece positioning is a core element in ensuring product quality and production efficiency. Currently, the clamping structure of traditional automated positioning devices is mostly a fixed design. When the size or shape of the workpiece changes, the entire clamping assembly needs to be disassembled and replaced, which takes a long time and seriously affects production continuity, resulting in insufficient practicality. Therefore, it is necessary to redesign an automatic workpiece positioning device to address the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic workpiece positioning device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An automatic workpiece positioning device includes a base. A bidirectional screw is rotatably mounted inside the base via a mounting groove. A motor connected to the bidirectional screw is fixedly mounted on the outer wall of the base. Two moving blocks are threadedly mounted on the outer wall of the bidirectional screw via a limiting mechanism. A mounting frame is fixedly mounted on the upper end face of each of the two moving blocks via a connecting mechanism. A mounting block is slidably mounted inside each mounting frame. A clamping block is fixedly mounted on the outer wall of the two mounting blocks in the same group. A fixing pin is slidably through-mounted on the upper end face of each mounting frame. An insertion hole is opened on the upper end face of each mounting block to mate with the fixing pin in the same group. A lever is fixedly mounted at the end of each fixing pin. A fixing spring is mounted on the outer wall of each fixing pin. The two ends of each fixing spring are elastically connected to the inner wall of the lever in the same group and the upper end face of the mounting frame, respectively.

[0006] Preferably, the limiting mechanism includes two limiting rods fixedly installed inside the mounting groove, and both limiting rods slide through the two moving blocks.

[0007] Preferably, the connecting mechanism includes a connecting rod fixedly installed on the upper end face of the movable block, and the end of the connecting rod is fixedly connected to the outer wall of the mounting frame.

[0008] Preferably, the base has multiple support legs fixedly installed on its bottom wall, and each support leg has a shock-absorbing pad fixedly installed on its bottom wall.

[0009] Preferably, anti-slip pads are fixedly installed on the inner walls of both clamping blocks, and both anti-slip pads are made of rubber.

[0010] Preferably, a PLC controller is fixedly installed on the outer wall of the base, and the PLC controller is electrically connected to the motor.

[0011] The beneficial effects of this utility model are: 1. By setting the mounting block and mounting frame to slide together, combined with the detachable structure of the fixing pin and the insertion hole, the appropriate clamping block can be quickly replaced according to the size and shape of the workpiece. When changing the type, you only need to move the lever to pull out the fixing pin, adjust or replace the mounting block and then release the lever. The time consumption is short and the equipment's adaptability to a variety of workpieces is greatly improved.

[0012] 2. By setting a limit rod to form a rigid constraint on the moving block, it is prevented from rotating with the bidirectional screw, ensuring that the clamping block moves smoothly along a straight line and reducing positioning offset. The rubber anti-slip pad increases friction to prevent the workpiece from sliding and also buffers the clamping force to avoid damage to the workpiece surface. The positioning repeatability can meet the processing and assembly accuracy requirements of small and medium-sized workpieces. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an automatic workpiece positioning device proposed in this utility model; Figure 2 This is a side view of the automatic workpiece positioning device proposed in this utility model; Figure 3 for Figure 1 A schematic diagram of the vertical section structure; Figure 4 for Figure 1 Enlarged schematic diagram of the structure at point A in the diagram; Figure 5 for Figure 3 Enlarged schematic diagram of the structure at point B in the diagram.

[0014] In the diagram: 1. Base, 2. Support leg, 3. Shock-absorbing pad, 4. Bidirectional screw, 5. Motor, 6. Limit rod, 7. Moving block, 8. Connecting rod, 9. Mounting frame, 10. Mounting block, 11. Clamping block, 12. Anti-slip pad, 13. Fixing pin, 14. Pulling block, 15. Fixing spring, 16. PLC controller. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-5An automatic workpiece positioning device includes a base 1. Multiple support legs 2 are fixedly installed on the bottom wall of the base 1. Each support leg 2 is fixedly installed with a shock-absorbing pad 3 on its bottom wall. The support legs 2 provide stable support for the entire device, while the shock-absorbing pad 3 can absorb the vibration generated during the operation of the equipment, reduce the impact of vibration on the positioning accuracy, and avoid hard wear between the device and the placement surface. A bidirectional screw 4 is rotatably installed inside the base 1 through a mounting groove. A motor 5 connected to the bidirectional screw 4 is fixedly installed on the outer wall of the base 1.

[0017] Two moving blocks 7 are threadedly installed on the outer wall of the bidirectional screw 4 through a limiting mechanism. The limiting mechanism includes two limiting rods 6 fixedly installed inside the mounting groove. Both limiting rods 6 slide through the two moving blocks 7. The limiting rods 6 can effectively limit the movement trajectory of the moving blocks 7, prevent them from deviating as the bidirectional screw 4 rotates, ensure that the moving blocks 7 always move smoothly along a straight line, and improve the positioning accuracy.

[0018] Two movable blocks 7 are each fixedly mounted with a mounting frame 9 on their upper surfaces via a connecting mechanism. The connecting mechanism includes a connecting rod 8 fixedly mounted on the upper surface of the movable block 7. The end of the connecting rod 8 is fixedly connected to the outer wall of the mounting frame 9. The connecting rod 8 serves as a connecting bridge between the movable block 7 and the mounting frame 9, and can stably transmit the power of the movable block 7 to the mounting frame 9 and the clamping block 11, ensuring the synchronicity and reliability of the clamping action. Each mounting frame 9 has a mounting block 10 slidably mounted inside. The outer walls of the two mounting blocks 10 in the same group are fixedly mounted with a clamping block 11. The inner walls of the two clamping blocks 11 are fixedly mounted with anti-slip pads 12. Both anti-slip pads 12 are made of rubber. The rubber anti-slip pads 12 can increase the friction between the workpiece and the workpiece, preventing the workpiece from sliding during the clamping process, and can also play a buffering role to avoid excessive clamping force from damaging the surface of the workpiece.

[0019] Each mounting frame 9 has a slidably through-mounted fixing pin 13 on its upper end face. Each mounting block 10 has an insertion hole on its upper end face that mates with the fixing pin 13 in the same group. Each fixing pin 13 has a toggle block 14 fixedly mounted at its end. Each fixing pin 13 has a fixing spring 15 mounted on its outer wall. Each fixing spring 15 has two ends that are elastically connected to the inner wall of the toggle block 14 in the same group and the upper end face of the mounting frame 9, respectively. A PLC controller 16 is fixedly mounted on the outer wall of the base 1. The PLC controller 16 is electrically connected to the motor 5.

[0020] When using this utility model, the workpiece is placed on the upper surface of the base 1, ensuring that the workpiece is in the central area between the two clamping blocks 11. There is no need to manually calibrate the initial position. Then, the device is started by the PLC controller 16. The PLC controller 16 sends a preset command to the motor 5, driving the bidirectional screw 4 to rotate smoothly in the mounting groove. Since the two sections of the threads on the outer wall of the bidirectional screw 4 have opposite directions of rotation, and the moving block 7 is threadedly engaged with the bidirectional screw 4 through the limiting mechanism, the two limiting rods 6 restrict the tendency of the moving block 7 to rotate with the screw, so that the two moving blocks 7 move synchronously towards each other along the axial direction of the limiting rods 6. The moving block 7 drives the mounting frame 9 and the clamping block 11 to move closer to the workpiece synchronously through the connecting rod 8. The rubber anti-slip pad 12 on the inner wall of the clamping block 11 first contacts the surface of the workpiece. As the moving block 7 continues to move, the anti-slip pad 12 gradually adheres to the workpiece and generates a moderate clamping force. This not only increases the friction through the anti-slip texture to prevent the workpiece from sliding, but also avoids pressure damage to the surface of the workpiece through the elastic buffer of the rubber material. When the clamping block 11 reaches the preset clamping stroke or clamping force, the PLC controller 16 receives the signal from the motor 5 and controls the motor 5 to stop running. The workpiece is automatically positioned, and the device remains in the clamping state, allowing subsequent processing, assembly, or inspection processes to begin. If a workpiece of a different specification needs to be replaced, simply control the motor 5 to reverse via the PLC controller 16. The bidirectional screw 4 will drive the moving block 7 and the clamping block 11 to separate in the opposite direction, releasing the workpiece and removing it. To replace the appropriate clamping block 11, move the lever 14 upwards, and the fixing pin 1... 3. Overcome the elastic force of the fixing spring 15 and move upward to disengage from the insertion hole at the upper end of the mounting block 10. At this time, the mounting block 10 and the clamping block 11 can be slid out along the inside of the mounting frame 9. The new adapter clamping block 11 is slid into the mounting frame 9 through the mounting block 10. After adjusting to the appropriate position, release the lever 14. The fixing spring 15 returns to its original position and pushes the fixing pin 13 into the corresponding insertion hole, thus completing the quick fixing of the clamping block 11. It can then be used for positioning the next type of workpiece. The whole process does not require complicated tools, is easy to operate, and greatly improves the continuity of production.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic workpiece positioning device, comprising a base (1), characterized in that, A bidirectional screw (4) is rotatably mounted inside the base (1) via a mounting slot. A motor (5) connected to the bidirectional screw (4) is fixedly mounted on the outer wall of the base (1). Two moving blocks (7) are threadedly mounted on the outer wall of the bidirectional screw (4) via a limiting mechanism. An mounting frame (9) is fixedly mounted on the upper end face of each of the two moving blocks (7) via a connecting mechanism. An mounting block (10) is slidably mounted inside each mounting frame (9). The outer walls of the two mounting blocks (10) in the same group are fixedly mounted together. There is a clamping block (11), and a fixing pin (13) is slidably installed through the upper end face of each mounting frame (9). Each mounting block (10) has an insertion hole on its upper end face that mates with the fixing pin (13) in the same group. A lever (14) is fixedly installed at the end of each fixing pin (13). A fixing spring (15) is installed on the outer wall of each fixing pin (13). Both ends of each fixing spring (15) are elastically connected to the inner wall of the lever (14) in the same group and the upper end face of the mounting frame (9), respectively.

2. The automatic workpiece positioning device according to claim 1, characterized in that, The limiting mechanism includes two limiting rods (6) fixedly installed inside the mounting groove, and both limiting rods (6) slide through the two moving blocks (7).

3. The automatic workpiece positioning device according to claim 2, characterized in that, The connecting mechanism includes a connecting rod (8) fixedly installed on the upper end face of the movable block (7), and the end of the connecting rod (8) is fixedly connected to the outer wall of the mounting frame (9).

4. The automatic workpiece positioning device according to claim 3, characterized in that, The base (1) has multiple support legs (2) fixedly installed on its bottom wall, and each support leg (2) has a shock-absorbing pad (3) fixedly installed on its bottom wall.

5. The automatic workpiece positioning device according to claim 4, characterized in that, Both clamping blocks (11) have anti-slip pads (12) fixedly installed on their inner walls, and both anti-slip pads (12) are made of rubber.

6. The automatic workpiece positioning device according to claim 5, characterized in that, A PLC controller (16) is fixedly installed on the outer wall of the base (1), and the PLC controller (16) is electrically connected to the motor (5).

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